#pragma once

#include <iostream>
#include <functional>

#include "Socket.hpp"
#include "InetAddr.hpp"
#include "Log.hpp"
#include "Protocol.hpp"

using namespace socket_ns;
using namespace log_ns;

using process_t = std::function<std::shared_ptr<Response>(std::shared_ptr<Request>)>;

class IOService
{
public:
    IOService(process_t process)
     : _process(process)
    {
    }
    void IOExcute(SockPtr sock, const InetAddr &addr)
    {
        // 长服务
        while (true)
        {
            // std::cout << "------------------------------------------------" << std::endl;
            // 1. 负责提取
            std::string packagestreamqueue;
            ssize_t n = sock->Recv(&packagestreamqueue);
            if (n <= 0)
            {
                LOG(INFO, "client %s quit or recv error\n", addr.AddrStr().c_str());
                break;
            }
            std::cout << "------------------------------------------------" << std::endl;
            std::cout << "packagestreamqueue: \n" << packagestreamqueue << std::endl;
            // 我们能保证我们读到的是完整的报文吗？不能！
            // 2.报文解析，提取报头和有效载荷
            std::string package = Decode(packagestreamqueue);
            if (package.empty())    continue;
            // 我们能保证我们读到的是完整的报文吗？能！
            auto req = Factory::BuildRequestDefault();

            std::cout << "package: \n" << package << std::endl;

            // 3.反序列化
            req->Deserialize(package);

            // 4.业务处理
            auto resp = _process(req); // 通过请求，得到应答

            // 5.序列化应答
            std::string respjson;
            resp->Serialize(&respjson);

            std::cout << "respjson: \n" << respjson << std::endl;

            // 6.添加len长度报头
            respjson = Encode(respjson);

            std::cout << "respjson add header done: \n" << respjson << std::endl;

            // 7.发送回去
            sock->Send(respjson);
        }
    }
    ~IOService()
    {
    }

private:
    process_t _process;
};